摘要
采用荧光光谱滴定法研究了室温下水溶液中,葫芦脲[7](CB[7])对邻苯二胺的包结作用.在一定的浓度范围内,邻苯二胺与葫芦脲[7]作用后发现,体系的荧光强度随着葫芦脲[7]浓度的增大而增强,且荧光峰位有一定的红移.结果显示二者形成了1:1的包结配合物.该方法的线性范围是0.097-1.514μg.L-1,检出限为0.085μg.L-1.
In this paper the interaction between cucurbit[7]uril（CB7） and o-phenylenediamine（o-PDA） were investigated by the method of fluorescence spectrometry under the optimized condition.It was found that the fluorescence intensity of o-PDA regularly increased upon the addition of CB7.1：1 stoichiometry for the complexation was estabilished and their complex constant at room temperature（18.0 °C） was calculated by applying a deduced equation.Based on the results,the novel method for the determination of o-PDA was developed with a linear range of O. 097 - 1. 514μg·L^-1 and a detection of 0. 085μg·L^-1.
出处
《安徽师范大学学报（自然科学版）》
CAS
北大核心
2009年第6期561-564,共4页
Journal of Anhui Normal University(Natural Science)
基金
国家自然科学基金资助(20875002)
关键词
邻苯二胺
荧光光谱
包合
痕量测定
葫芦脲[7]
o-PDA
Spectrofluorimetry
Inclusion interaction
Trace determination
Cucurbit[7]uril
